diff --git a/core/tests/Drupal/KernelTests/Core/Field/FieldAccessTest.php b/core/tests/Drupal/KernelTests/Core/Field/FieldAccessTest.php
index 5ef2d43..2099146 100644
--- a/core/tests/Drupal/KernelTests/Core/Field/FieldAccessTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Field/FieldAccessTest.php
@@ -9,7 +9,7 @@
 
 use Drupal\Core\Access\AccessResult;
 use Drupal\entity_test\Entity\EntityTest;
-use Drupal\simpletest\KernelTestBase;
+use Drupal\KernelTests\KernelTestBase;
 use Drupal\user\Entity\User;
 
 /**
diff --git a/core/tests/Drupal/KernelTests/Core/Field/FieldItemTest.php b/core/tests/Drupal/KernelTests/Core/Field/FieldItemTest.php
index 69e7f7f..533484c 100644
--- a/core/tests/Drupal/KernelTests/Core/Field/FieldItemTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Field/FieldItemTest.php
@@ -12,14 +12,14 @@
 use Drupal\entity_test\Entity\EntityTestMulRev;
 use Drupal\field\Entity\FieldConfig;
 use Drupal\field\Entity\FieldStorageConfig;
-use Drupal\system\Tests\Entity\EntityUnitTestBase;
+use Drupal\KernelTests\Core\Entity\EntityKernelTestBase;
 
 /**
  * Test field item methods.
  *
  * @group Field
  */
-class FieldItemTest extends EntityUnitTestBase {
+class FieldItemTest extends EntityKernelTestBase {
 
   /**
    * @var string